Skin prick allergy test

[worriedmommy]

This is more of an allergy question than a PANDAS one, but I know that many PANDAS kids have been through allergy tests, so I'm hoping someone may be able to weigh in on this.

 

Dd6 had a skin prick test today for 8 foods. Along with that they did an extra prick of histamine, which is the positive control prick. Everyone should have a reaction to the histamine. Well dd did not have a reaction to it. They even repeated and did a 2nd histamine prick, which also had no reaction. They said this normally only happens when a child is on an oral antihistamine, which dd does NOT take. She does take a nasal spray antihistamine, but they said that would not affect the test. They could not explain why she had no reaction, but said her lack of reaction meant that the rest of the test did not "count".

 

Anyone ever had no reaction to the histamine prick? I'm trying to find out what this means.

[peglem]

This is more of an allergy question than a PANDAS one, but I know that many PANDAS kids have been through allergy tests, so I'm hoping someone may be able to weigh in on this.

 

Dd6 had a skin prick test today for 8 foods. Along with that they did an extra prick of histamine, which is the positive control prick. Everyone should have a reaction to the histamine. Well dd did not have a reaction to it. They even repeated and did a 2nd histamine prick, which also had no reaction. They said this normally only happens when a child is on an oral antihistamine, which dd does NOT take. She does take a nasal spray antihistamine, but they said that would not affect the test. They could not explain why she had no reaction, but said her lack of reaction meant that the rest of the test did not "count".

 

Anyone ever had no reaction to the histamine prick? I'm trying to find out what this means.

Allie did not have a reaction. She is IgE deficient. I'm not sure if that's connected- don't have research to back it up, but since IgE causes mast cells to release histamine...I'm thinking.

[worriedmommy]

This is more of an allergy question than a PANDAS one, but I know that many PANDAS kids have been through allergy tests, so I'm hoping someone may be able to weigh in on this.

 

Dd6 had a skin prick test today for 8 foods. Along with that they did an extra prick of histamine, which is the positive control prick. Everyone should have a reaction to the histamine. Well dd did not have a reaction to it. They even repeated and did a 2nd histamine prick, which also had no reaction. They said this normally only happens when a child is on an oral antihistamine, which dd does NOT take. She does take a nasal spray antihistamine, but they said that would not affect the test. They could not explain why she had no reaction, but said her lack of reaction meant that the rest of the test did not "count".

 

Anyone ever had no reaction to the histamine prick? I'm trying to find out what this means.

Allie did not have a reaction. She is IgE deficient. I'm not sure if that's connected- don't have research to back it up, but since IgE causes mast cells to release histamine...I'm thinking.

 

Interesting. Dd has had her IgE tested, and it was normal. That was months ago. I wonder if things have changed.

[ShannonOtown]

I had a skin test a while back and the same thing happened to me. My doctor said I didn't react to the test and if I wanted to find results, I would have to do a blood test. He just said that some patients don't react to skin scratches... didn't say why not.

[worriedmommy]

I had a skin test a while back and the same thing happened to me. My doctor said I didn't react to the test and if I wanted to find results, I would have to do a blood test. He just said that some patients don't react to skin scratches... didn't say why not.

 

Good to know that this has happened to others. The strange thing is that last year she had a skin prick test for seasonal allergies and she did react to the histamine prick, as well as many trees, pollen, etc. I was just surprised that this year she didn't react.

 

They also said the blood test was the way to go at this point. Poor kid has had 5 in the past month. I feel so bad having her get another one.

[melanie]

I had a skin test a while back and the same thing happened to me. My doctor said I didn't react to the test and if I wanted to find results, I would have to do a blood test. He just said that some patients don't react to skin scratches... didn't say why not.

 

Good to know that this has happened to others. The strange thing is that last year she had a skin prick test for seasonal allergies and she did react to the histamine prick, as well as many trees, pollen, etc. I was just surprised that this year she didn't react.

 

They also said the blood test was the way to go at this point. Poor kid has had 5 in the past month. I feel so bad having her get another one.

 

 

Danny had no reaction either I thought they screwed up the test also IgG deficient

 

melanie

[worriedmommy]

This is more of an allergy question than a PANDAS one, but I know that many PANDAS kids have been through allergy tests, so I'm hoping someone may be able to weigh in on this.

 

Dd6 had a skin prick test today for 8 foods. Along with that they did an extra prick of histamine, which is the positive control prick. Everyone should have a reaction to the histamine. Well dd did not have a reaction to it. They even repeated and did a 2nd histamine prick, which also had no reaction. They said this normally only happens when a child is on an oral antihistamine, which dd does NOT take. She does take a nasal spray antihistamine, but they said that would not affect the test. They could not explain why she had no reaction, but said her lack of reaction meant that the rest of the test did not "count".

 

Anyone ever had no reaction to the histamine prick? I'm trying to find out what this means.

Allie did not have a reaction. She is IgE deficient. I'm not sure if that's connected- don't have research to back it up, but since IgE causes mast cells to release histamine...I'm thinking.

 

Interesting. Dd has had her IgE tested, and it was normal. That was months ago. I wonder if things have changed.

 

My bad...I just looked at dd's blood work again, and her IgE was not tested. Hmmm...

[Stephanie2]

I don't know, but my son's IgE tested very high and he got a full-body reaction to the histamin prick. Seems like a pattern here...

 

Stephanie

 

This is more of an allergy question than a PANDAS one, but I know that many PANDAS kids have been through allergy tests, so I'm hoping someone may be able to weigh in on this.

 

Dd6 had a skin prick test today for 8 foods. Along with that they did an extra prick of histamine, which is the positive control prick. Everyone should have a reaction to the histamine. Well dd did not have a reaction to it. They even repeated and did a 2nd histamine prick, which also had no reaction. They said this normally only happens when a child is on an oral antihistamine, which dd does NOT take. She does take a nasal spray antihistamine, but they said that would not affect the test. They could not explain why she had no reaction, but said her lack of reaction meant that the rest of the test did not "count".

 

Anyone ever had no reaction to the histamine prick? I'm trying to find out what this means.

Allie did not have a reaction. She is IgE deficient. I'm not sure if that's connected- don't have research to back it up, but since IgE causes mast cells to release histamine...I'm thinking.

 

Interesting. Dd has had her IgE tested, and it was normal. That was months ago. I wonder if things have changed.

 

My bad...I just looked at dd's blood work again, and her IgE was not tested. Hmmm...